dear Murli sir,
i have taken such a kind of UNRESERVED SLEEPER CLAASS tickets...I don't know whether that z right or wrong...but i have read this in CR, s zonal time table...Also I have seen these tickets with some of my MILITARY friends....they says that....if our leave intimated to us on the same then we take this ticket on WARRANT (military concession) and travel in sleeper coach for LONG or SHORT distance may not be important....THANK U